(Q37548259)
Statements
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Validation sampling can reduce bias in health care database studies: an illustration using influenza vaccination effectiveness (English)
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Thomas Lumley
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Lisa A Jackson
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Vaccine Safety Datalink Team
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Michael L Jackson
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Jennifer Clark Nelson
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Tracey Marsh
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Eric B Larson
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1 August 2013
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8 Suppl
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S110-21
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Identifiers
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